![]() The physiology of colour involves the eye’s and the brain’s responses to light and the sensory data they produce. The analysis of this interaction and the factors that determine it are the concerns of the physics of colour. TheAn object appears coloured because of the way it interacts with light. The three characteristics of hue, saturation, and brightness are commonly used to distinguish one colour from another. Clearly, the perception of colour depends on vision, light, and individual interpretation, and an understanding of colour involves physics, physiology, and psychology.Ĭolours result from the electromagnetic radiation of a range of wavelengths that are visible to the eye. Even under identical conditions, the same object may appear red to one observer and orange to another. ![]() Finally, the manner in which the brain responds to visual stimuli must also be considered. Light of some critical intensity, therefore, is also necessary for colour perception. Only when more light is present do colours appear. A person can see in dim light, however, without being able to distinguish colours. Vision is obviously involved in the perception of colour. Radiation of such wavelengths constitutes that portion of the electromagnetic spectrum known as the visible spectrum-i.e., light. In physics, colour is associated specifically with electromagnetic radiation of a certain range of wavelengths visible to the human eye. SpaceNext50 Britannica presents SpaceNext50, From the race to the Moon to space stewardship, we explore a wide range of subjects that feed our curiosity about space!Ĭolour, also spelled color, the aspect of any object that may be described in terms of hue, lightness, and saturation.Learn about the major environmental problems facing our planet and what can be done about them! Saving Earth Britannica Presents Earth’s To-Do List for the 21st Century.Britannica Beyond We’ve created a new place where questions are at the center of learning.100 Women Britannica celebrates the centennial of the Nineteenth Amendment, highlighting suffragists and history-making politicians.COVID-19 Portal While this global health crisis continues to evolve, it can be useful to look to past pandemics to better understand how to respond today.Student Portal Britannica is the ultimate student resource for key school subjects like history, government, literature, and more. ![]() From tech to household and wellness products.
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